Volume changes in the brain tissues of long-term visitors to the International Space Station (ISS) have been accurately measured for the first time. An international team of neuroscientists, led by Floris Wuyts at the University of Antwerp, quantified the changes after performing MRI scans on Russian cosmonauts before, shortly after, and months after their trips into space. Their findings could help to identify some previously-unforeseen risks of long-term spaceflight (N. Engl. J. Med. 10.1056/NEJMc1809011).To read more, click here.